Lubricator



2 Sheets Sheet 2.

(NoModel.)

w. H; CRM@ LUBRIOATOR.

Patented July 19, 18972.

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UNITED jSirnTRSd vPrvrnnrr CRRICE.

WARREN HILLIARD CRAIG,.OF LAWRENCE, MASSACHUSETTS.

LUBRICATOR.,

SPECIFICATION forming part of Letters Patent No. 479,116, dated July 19,1892.

Application filed April 7, 1891'. Serial No. 388,057- (No model.)

To all whom it may concern:

Be it known that I, WARREN I-IILLIARD CRAIG, of Lawrence, county of Essex, State of Massachusetts, have invented new and useful Improvements in Sight-Feed Lubricators, the same being set forth in the following specification and claims hereinafter presented.

My invention consists of a new form of construction and arrangement of parts which are improvements on patents granted to me, Nos. 277,464, 367,370, and 398,583.

In the accompanying drawings is shown a lubricator especiallyy adapted for locomotive use. It is also adapted to use on any kind of steam-engine requiring cylinder lubrication. In describing the same I make use of reference-letters.

Like letters -in the several figures refer to same parts. v

Figurel is a front View; Fig. 2, a sectional view at right angles to Fig. 1; Fig. 3, a crosssection through the sight-feed chambers. Fig. 4 is also a cross-section taken below the sightfeed chamber through the feed-regulating valves. Fig. 5 is a broken section on line 1 1, showing the oil-discharge passages leading from the sight-feed chambers below. Fig. 6 is a vertical section of my oil-drop conduit, from the tapered end of which the oil is discharged up through water. Fig. y7 is a section of novelly-constructed light-reiector and also partition that forms a part of the side walls of my sight-feed chambers. Fig. 8 is a section of follow-ringto hold the glass in place and also forms part of my sight-feed chamber. Fig. 9 is edge view of a round iiat glass that forms the Window through which the feed isy observed. Fig.'10 Vis a section of my improved glass-holder.v Fig. 11 shows end of discharge-valve or screw-plug. Fig. 12 is an enlarged cross-section taken through valve E. Fig. 13 shows a section taken on a plane passing vertically through the center of pipe S down to passage Q, then horizontally un-til it meets a vertical plane passing through the' centerlines of pipesWandV, and then following the' latter plane, the section being taken at right angles to the section shown in Fig. 2. Fig. 14 is a plan view of a cross-section through E E of Fig. 13, also on line 1 1 of Figs. 1 and 2. Fig. 15 shows section of conduit R on line 2 of Fig. 14. Fig. 16 is a section of conduit Q, taken on line 3 of Fig. 14; also shows the way it is formed on the inner wall of the oilreservoir.

In Fig. 1, A is the reservoir; B, the condenser; C, Ythe steam-inlet'rfrom the boiler; D D', unions that connect with pipes leading to steam-cylinders; E E', shut-off and steady valves, the end of which I turn to the size of the openingthat is to be closed. Just back of this it is enlarged and tapered to form a valveseat. The plug end I slot, so that when it is drawn back from the taper seat it gradually opens, and by the time it is open to the full area of the' slot the valve will be fully drawn from the discharge-opening. It will be seen that the opening is gradual and not sudden, but gradually increases until it is full open, the closing also being graduated in like manner. By the use of a valve with a graduated opening the lubricator is less liable to receive a sudden shock, that so frequently occurs in the use of other constructions, such shocks turning the water in the sight-feed chambers to a milky whiteness, rendering the feed invisible. Plug F closes the opening in the oilreservoir, through which the reservoir is charged with oil. Valves G and G regulate the flow of oil from the lubricator, that may be observed through the window H. The large nut I receives the glass and holds it in place and also forms the outer wall of my sightfeed chamber.

Figs. 7, 8, 9, and 10 are parts of my sightfeed chamber and are represented in the order in which they go together to form my improved sight-feed chamber and glass-setting. Agasket .I is placed in the holder I against the lip or flange. The glass-frameK is then placedin the holder. Then the follow-ring L is screwed into the thread that is made in the glass-holder just tight enough to keep it in place. The reiiector M is provided with a tongue N, that fits the follow-ring L, separating the sight-feed into two chambers.

- The body of reservoir A has a round chamber bored out to the diameter of the reflector M and the larger diameter of the ring L. The outer part of this bore is screw-threaded to receive the outer thread of the holder I. Leading out of the top of this bore are the passages O O. (See Fig. 5.) These vertical passages are separated by a partition P. The

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passages O O open into segmental passages Q Q', that communicate through the valves E and E with pipes connected at D and D. Also connecting with these passages are steam-conduits R and R', that also connect with vertical pipes S and S,leading from the condensing-chamber.

In the bottom of the eil-reservoir is a chamber T, inte which leads a pipe U. Opening out of the chamber T are chambers V and V', and the openings between these two and the chamber T are closed by the regulating-valves G and G'.

Passing through the chambers V and V are oil-dropcondnitsVVandVV. (SeeFigG.) This conduit is formed in a plug X, that is passed from the bottom of the lubricator up through these chambers and screws into the upper wall thereof and extends up through said wall into the si ght-feed chamber. When this plug X is in place, thc cross-hole Y opens into the chamber V, and the taper end extends into the sight-feed chamber far enough to allow the oil-drop forming en the end te be plainly seen through the window er glass K.

The flutes in the reflector M when filled with water form the chambers in which the drops are formed. In the bore and back of the light-refiecter M is aspring m', the crown of which presses the reflector forward. 0 (See Fig. 2.) At the upper end of this spring a small screw m2 serves to hold the spring and also keep the reiiector in its proper position, the screw-head entering a small hole in the back of the reflector.

Leading from the bottom of the condenser is an angular passage Z. Frein this passage and extending down te the bottom ofthe oilreservoir is a pipe a to convey the water from the condenser to displace the oi1,tl1e upper end of this pipe being closed by a valve b.

Projecting from the back of the oil-reservoir is a shank c, that is made use of to support the lubricator in place. Leading from the bottom of the oil-reservoir is a drain-cock d of wellknown form. By this construction my lubricator is very compact; a Very perfect sight-feed is obtained with only one glass plate. In this I have shown two distinct sight-feeds, which I sometimes increase te three for the oiling of a third cylinder, as in the case of a locomotive, the two main cylinders and that of the air-pump; but as there is no material difference in the construction of the third than already shown and described I do not deem further description important.

My improved glasssetting is of great importance as it receives its pressure from the pressure of steam and oil in the lubricator to make it tight, the follow-ring being only to keep the glass and gaskets in place, all pressure against the glass being from the inside te force it outward.

Previous to my invention a pressure from the outside against the glass was required sufficient to held the pressure from the inside, as in the patents herein referred to.

By use of my improved light-reflector a better reflection of light is obtained.

By use of the tongue or partition with the flute or concaved portions I am able to ob tain lnore than one distinct sight-feed chamber through which the eil passes through water with only one glass pane.

By constructing the oil-chamber below the sight-feed and in the oil-reservoir I am able to regulate or control the flow through the sight-feed chamber and make a cheap compact device.

The operation is substantially like that of these to which I referred. The steam entering the condenser is condensed, and as water enters the oil-reservoir through the pipe a the eil floats, and through the pipe U enters the chamber T. The valve Gr being open,it flows into the chamber V and enters the plug X through the cross-passage Y and rises through the passage NV to the sight-feed chamber. This chamber being charged with water, the eil forms on the taper end of the plug X, and when the drop becomes sufficiently large it rises through the water, passes along the pas sages O and Q, where it is met by steam coming through the pipe S and passage R, and by it is carried through the valve E te the pipes leading to the cylinder and valve to be lubricated.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a lubricator, the reflector M, having the tongue N, which forms the reflector into two chambers, in combination with an oil-induct pipe leading into each chamber of the reflector, and an eil-educt pipe leading from each chamber to the part to be oiled, as set forth.

2. In a lubricator, the sight-fccd-glass holder and its contained glassand the reflector, in combination with the follow-ring en the inside bearing against the glass, as set forth.

3. In a lubricator, the combination of the sight-feed glass, its holder, and the packing on the outside of the glass, and the fellowring on the inside, as set forth.

4. In a lubricator, the sight-feed glass, its holder, and the follow-ring on the inside, in combination with the reflector and the spring which bears against the reflector, whereby the reflector is held resiliently against the follow-ring and helder, as set forth.

5. In a lubricator, the combination of the oil-reservoir A, the chambersV V, having a connection with such oil-reservoir through which oil passes to said chambers, the valves G G controlling such connection, the double sight-feed chamber, the conduits W "W, leading from the chambers V V into the double sight-feed chamber, and oil-discharging conduits leading from such double sight-feed chamber, as set forth.

6. In a lubricator, the combination of the oil-reservoir A, the oildischarging conduit u leading therefrom, the chamber T at the bet- IOO IIO

tom of the oil-reservoir and into which the oil-l sight-feed chamber, and the oil-discharging discharging conduit leads, the chambers V V', conduits leading' from suchv double sight-feed connected with the chamber T and having chamber, as set forth.

the valves G G', controlling the opening be- WARREN HILLIARD CRAIG. 5 tween them, the conduits W W', the double Witnesses:

sight-feed chamber, the conduits W W', lead- HENRY F. HOPKINS,

ing from the chambers V V into the double JOSEF HANoUsEcK. 

